Positive grip filling machine



July 19, 1949. GbLDBERC-i, 2,476,723

Q POSITIVE GRIP FILLING MACHINE I5 Shets-Sheet 1' Filed April 11 1946 MAX GOLDBERG INVENTOR 58 ATTORNEY y 9, 9 49. .M. GOLDB'ERG I 2,476,723

POSITIVE GRIP FILL'ING- mcamf.

Filed April 11, 1946 3 Sheets-Sheet 2 .rfiillllll lllllllwll/--IIIIIll|l in" v n" w MAX GOLDBERG INVENTOR.

Y ATTORNEY M. GOLDBERG 2,476,723 POSITIVE GRIP FILLING MACHINE I July19, 1949.

I ,3 Sheets-Sheet 3 Filed April 11 1946 MAX GOLDBERG v INVENTOR. BYW flum/ ATTORNEY Patented July 19, 1949 UNITED STATES PATENT OFFICE Thisinvention relates to a machine for fillin the casings of articles,particularly those me of non-porous fabric, skins, etc. v

An object of this invention .is to provide a m chine for filling fibrousmaterials by movable gripping jaws having one-way feeding teethwhich-positively grip and feed the fibrous material into non-porous orporous fabric casings.

Another object of this invention is to mount the feeding jaws onplvotally mounted links of equal length so as to cause the grippingjawsto move and feed while in parallel relation toeach other.

Another object of this invention is to pivotally mount the feeding jawson the upright legs of a slidable and inverted U-shaped frame to permitthe fibrous material to be fed to the feeding jaws between the uprightlegs of the slidable frame.

Another object of this invention is to provide a rotatable cam foractuating the frame down-- wardly and to provide tension springs forraising the frame with a-quick return motion.

Another object of this invention is to provide fixed cam mechanismswhich causes lateral movements of the opposed feeding jaws.

With the above andother objects in-view, the invention will behereinafter more particularly described, and the combination andarrangement of parts will be shownin the accompanying drawings andpointed out in the claims which form part of this specification. I

Reference will now be had to the drawings, wherein like numerals ofreference will designate corresponding parts throughoutthe severalviews, in which:

Figure 1 is a front elevation of the filling ma,-

chine, the housing being partly broken away to;

show the interior of the mechanism. Figure 2 is an end view of thefilling machine shown in Figure ,1, the housing being partly.

broken away.

Figure 3 is a cross-sectionalview; the section being taken as on line3-4 in Figure 1.

Figure 4 is an enlarged fragmentaryview of a mechanism whichreciprocates the feeding.

jaws in parallel relation.

In the illustrated embodiment of the invention, 5 the numeral lindicates a gripping and feeding mechanism for fibrous material. Themechanism.

Ill comprises a mounting plate I l, preferably supported in an uprightposition on an angular ex-- tension l2.

An inverted U-shaped frame .13 is mounted in v bearings It for verticalsliding motion on the mounting plate, Tension springs I secured at.

2 Claims. (01. 226-49) support the "frame in uppermost position. openface type disk cam Zllis fixed to a shaft ZI by a key 22.. The shaftl'lis rotatably.

mounted in -;a'bearing 2.3 secured to the mounting plate H. The cam 2!!has an abrupt radially directed face portion 24. ,The com contacts anelongated "extension 25 on the horizontalbar ll of the U shaped-frame l3.

In practice, the length of the radially directed cam face. is less thanthe length ofv theelongated extension 25 to assure contact of the upperor contact point of the extension 25 with the cam 20 and. avoiding"contact between the cam; and the horizontal bar I! of the frame l3.

The cam l0 is of the open face disk type and may be taken-asrepresenting any suitable means for actuating the frame l3 toward thelower por-- tion of the mounting plate H The cam .20 imparts a downwardmotion to the frame l3 forevery revolution of the shaft, and

the tension springs l5 raise-the frame when released by the cam. Theframe is raised with a.

at-the uppermost and lowermost ends of each stroke.

Each gripping and feeding Jaw 28 comprises an overhanging lower toothedportion ,32 having teeth 33. The teeth 33 have horizontal lower. Theteeth are positioned to .face each other and to be in. spacedapartrelation. As shown in Figure 1, it will be' seen thatthe-oppositelvcoacting teeth 33 on opposite jaws 28 have sides which liein the same.

faces and inctined sides.

' horizontal plane and, have downwardly converging sides so as tocausethe teeth to feed one-way. in-a downwarddirection.

.In the lowered position shown in Figure 1, the

upper-ends of the gripping and feeding jaws .28

are in spaced. relation with'projections or lugs 34 extending from thelegs .2] cf the frame l3.

The lower faces of the teeth .33 of the opposite.

jaws 28 arein alinement in horizontal planes.

For the efficient feeding of fibrous material to the nozzle 38, the jaws28 must'be moved into maximum spaced-apart or open relation when movedaway from the nozzle to the vicinity of the hopper 40. The jaws must be'moved into closest relative position when moved to the nozzle.

Figure 4 is a front elevation of an enlarged fragmentary portion of:fixed cam mechanism which causes lateral movements 'of the feeding jaws28. The cam mechanism 45 comprises a rectangular plate 46 having anendless groove orguideway 41 formed'th'erein. The groove 4? has twovertical portions 48 and two inclined portions 49 which are connected attheir'upper" and lower elevations by circular'groove portions 50. Eachguideway receives aroller carried by an actuating arm 52. The arms 52are at tachedto the feeding jaws 28 and are caused by the guideways 4]to move toward each other when in lower position and awayfrom each'otherwhen in upper position.

'It is to be noted that the equal'length links 30 causethe feeding jaws28 to move in parallel relation. w 1

As shown in Figure 3, the mounting plate 'H has apertures :55 servin toreceive bolts 58 upon which are mounted a plurality of'the fixed camplates 46. The cam plates 46 are mounted in spaced-apart relation bybushings 51. The bush ings 51 are of suitable thickness to provideclearance space so that the actuating arms 52 may freely move betweenthe cam plates 46.

It is to be noted that each roller 'Sl'is of a diameter permittingrotatable contacting relation within one of the guideways 41. Inoperathan, when the roller 5l reachesthe lower curved end 50 of theguidewayit contacts a vertically movable pawl 59 which is resilientlypressed in 4 The springs l5 then raise the fram 13 to its uppermostposition.

It is to be noted that the fixed cam mechanisms function when thegripping and feeding jaws 28 are in their lowermost position to permitthe springs 15 to raise the frames 13. The fixed cam mechanisms 45 alsofunction when the frames l3 are in their uppermost position to permitthe cams tolower the frames.

It is also to be noted that the filling machine 10 comprises suctionmeans (not shown), which in practice is suitably connected to pipes orconduits 65, through which suction is brought to bear on the machine infrom opposite sides. The conduits are adapted to be connected to suctioncreating means.

It is also to be noted that the pipes connect with apertures 66 at themid-portion of the machine and between the grippin and feeding jaws 28.Screens 61 aresuitably fastened in the apertures 6 6, to'prevent thefilling material from being sucked into the" pipes 55.

The gripping andfeeding jaws 28 feed successively'into" the duct 3'! andinto a casing such as a dolls leg 58.

In accordance with the patent statutes I have describedand illustratedthe preferred embodiment'of'my invention, but it will be understood thatvarious changes and'modi'fications can be made therein without departingfrom the spirit of' the invention as defined by the appended claims.

IcIaim: v I

1. In a reciprocable gripping and feeding mechanism for fibrousmaterial, a mounting plate, an inverted l J-'shaped frame slidablymounted on said plate and having upright arms, a cam in operativeengagement with said frame for moving said frame downwardly, springmeans for raising: said frame When'release'd by said cam,

bars respectively carried by two links pivotaily mounted on each arm of'said frame, said bars and said arms comprising jointed structures ofparallelogram formation whereby said bars are constrained to moveparallel to said arms, vertical guideway means for maintaining theparallel relation of said bars during the downward and upward strokes,the distance between said bars being'varied at the uppermost andlowermost ends the direction of the guideway by'a coil spring 60;

The portion of the pawl 59" which extends into the guideway is angularlydirectedto permit the roller 5! to continue its motion through theguidei way 50. When the roller 5| reaches the angularly directed portionof the pawl 59 it-forces the pawl out of the guideway againstthe'pressureof the spring 68. When the roller 5! passes the iwl 5 9, thepawl is pushed by the spring into the guideway and contacts the rollerand prevents This arrangement limits the movements or the pawl '59 intoand outer the guideway 41;

It is to be noted that the filling machine 1 t1 contains four" identicalinverted'u shaped frames v l3,.each frame havingan elongated-extension'25.

The fillin machine contains'four identical earns 20 and eight fixed cammechanisms 45.

In operation, when the highest point of a cam 20 reaches the contactpoint on one of the resil iently supported frames 13 the frame is thenin its lowermostposition and is suddenly released.

, mounted on each arm of said frame, said bars" of each stroke, saidbars having feeding jaws at their lower portions, said jaws havingalined feeding teeth, each of said teeth having a horizontal side and adownwardly converging side, said teeth being adaptedto feed only in adownward direction, and a nozzle mounted on said plate andv in'alinement with said feeding jaws, said mechanism comprising separatecam means for varying the distance between'said bars and arms.

2. In a reciprocable gripping and feeding mechanism for fibrous fillingmaterial, a mounting, a houing secured to said mounting, an invertedU-shapedframe slidably mounted in said housing and having elongatedarms, a cam in op erativeengagement with 'said frame for moving saidframe in feeding direction, spring means for returning said frame whenreleased by said cam, bar'srespe ctively carried by two links pivotaliyand said arms comprising jointed structures of parallelogram formationwhereby said bars" are constrained to move parallel tosaid arms,vertical guideway means for maintaining the parallel re-' lation of saidbars duringthe downward and upward strokes, the distance between saidbars be ing varied at theuppermost and lowermost ends REFERENCES CITEDThe following referenlces are of record in the file of this patent:

5 UNITED STATES PATENTS Number Name Date 520,881 Hagen June 5, 1894686,071 Hogg Nov. 5, 1901 829,738 Robinson Aug. 28, 1906 2,269,722 LaksoJan. 13, 1942 2,347,431 Pauly Apr. 25, 1944

